I think ultimately we’re going to go back and forth about an unanswerable question: what fulfills people? You can’t answer it for anyone else. One artist will need the audience as a foil; another will be perfectly happy to toil away in obscurity. To my mind the best advice is “try a lot of things and see what feels right to you; don’t be dogmatic about your approach until you have a very high level of confidence based on experience.” Beyond that I’m just not sure this is a question with a meaningful answer.